.page-about {
  --about-slant: -2deg;
  --about-slant-reverse: 2deg;
  --about-grid-line: rgba(30, 58, 95, .28);
  position: relative;
  background-color: var(--c-bg);
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .about-hero {
  position: relative;
  padding: 24px 0 56px;
  border-bottom: 1px solid var(--c-line);
  background-image:
    linear-gradient(145deg, rgba(57, 255, 20, .1), transparent 42%),
    linear-gradient(180deg, var(--c-bg-deep), var(--c-bg));
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: min(280px, 40%);
  height: 4px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-hot));
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
}

.page-about .breadcrumb-wrap {
  padding-bottom: 32px;
}

.page-about .about-eyebrow {
  margin: 0 0 12px;
  color: var(--c-hot);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.page-about h1 {
  margin: 0 0 20px;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4.25rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: .01em;
}

.page-about h1 .about-brand-line {
  display: block;
  margin-bottom: 10px;
  color: var(--c-hot);
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .2em;
  text-transform: uppercase;
}

.page-about .about-lead {
  max-width: 46rem;
  margin: 0;
  color: var(--c-dim);
  font-size: 1.05rem;
  line-height: 1.85;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 36px;
}

.page-about .about-stat {
  position: relative;
  padding: 18px 16px 16px;
  background: var(--c-glass);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  box-shadow: var(--shadow);
}

.page-about .about-stat:nth-child(2) {
  border-left-color: var(--c-hot);
}

.page-about .about-stat:nth-child(3) {
  border-left-color: var(--c-pos);
}

.page-about .about-stat-num {
  display: block;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
}

.page-about .about-stat-label {
  display: block;
  margin-top: 8px;
  color: var(--c-dim);
  font-size: .875rem;
}

.page-about .about-section {
  padding: 64px 0 56px;
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--c-line);
}

.page-about .section-head {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  margin-bottom: 36px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--c-line);
}

.page-about .section-index {
  color: var(--c-accent);
  font-family: var(--font-mono);
  font-size: .875rem;
  letter-spacing: .12em;
}

.page-about .section-title {
  margin: 0;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
}

.page-about .section-more {
  margin-left: auto;
  color: var(--c-dim);
  font-family: var(--font-mono);
  font-size: .8125rem;
  white-space: nowrap;
}

.page-about .about-origin-grid {
  display: grid;
  gap: 24px;
}

.page-about .about-copy {
  background: var(--c-panel);
  border: 1px solid var(--c-line);
}

.page-about .about-copy p {
  margin: 0 0 16px;
  color: var(--c-text);
  line-height: 1.9;
}

.page-about .about-copy p:last-child {
  margin-bottom: 0;
}

.page-about .about-principle {
  position: relative;
  padding: 32px;
  background-color: var(--c-panel);
  background-image: linear-gradient(135deg, rgba(255, 106, 0, .14), transparent 55%);
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow);
  transform: skewX(var(--about-slant));
}

.page-about .about-principle::after {
  content: "";
  position: absolute;
  inset: 0;
  border-left: 2px solid var(--c-hot);
  pointer-events: none;
}

.page-about .about-principle > * {
  transform: skewX(var(--about-slant-reverse));
}

.page-about .about-principle-label {
  color: var(--c-hot);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
}

.page-about .about-principle-text {
  margin: 16px 0 8px;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
}

.page-about .about-principle-note {
  margin: 0;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 8px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 16px;
  border-left: 1px dashed var(--c-line);
}

.page-about .about-timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: 36px;
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline-marker {
  position: relative;
  z-index: 1;
  width: 16px;
  height: 16px;
  justify-self: center;
  margin-top: 28px;
  background: var(--c-accent);
  border: 3px solid var(--c-bg);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--c-accent), 0 0 14px rgba(57, 255, 20, .6);
}

.page-about .about-timeline-card {
  position: relative;
  background-color: var(--c-panel);
  background-image: linear-gradient(135deg, rgba(14, 34, 53, .92), rgba(11, 27, 43, .88));
  border: 1px solid var(--c-line);
  border-top: 2px solid var(--c-accent);
  box-shadow: var(--shadow);
}

.page-about .about-timeline-card p {
  margin: 0 0 12px;
  color: var(--c-text);
  line-height: 1.75;
}

.page-about .about-timeline-card p:last-child {
  margin-bottom: 0;
}

.page-about .about-timeline-year {
  margin: 0 0 4px;
  color: var(--c-accent);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: .04em;
}

.page-about .about-timeline-card h3 {
  margin: 0 0 12px;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.2;
}

.page-about .about-timeline-details {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--c-line);
}

.page-about .about-timeline-details summary {
  cursor: pointer;
  color: var(--c-accent);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  list-style: none;
}

.page-about .about-timeline-details summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline-details summary::after {
  content: "＋";
  margin-left: 8px;
  color: var(--c-hot);
}

.page-about .about-timeline-details[open] summary {
  margin-bottom: 8px;
}

.page-about .about-timeline-details[open] summary::after {
  content: "－";
}

.page-about .about-timeline-details p {
  margin: 0;
  color: var(--c-dim);
  font-size: .9rem;
  line-height: 1.75;
}

.page-about .about-visual {
  position: relative;
  overflow: hidden;
  margin: 40px 0 0;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  box-shadow: var(--shadow);
}

.page-about .about-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-venue-map {
  cursor: zoom-in;
}

.page-about .about-venue-map img {
  transition: transform .4s var(--ease);
}

.page-about .about-venue-map:hover img {
  transform: scale(1.02);
}

.page-about .about-venues-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-venues-copy p {
  margin: 0 0 16px;
  color: var(--c-text);
  line-height: 1.85;
}

.page-about .about-venues-copy .btn {
  margin-top: 8px;
}

.page-about .about-venue-list {
  display: grid;
  gap: 10px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.page-about .about-venue-list li {
  position: relative;
  padding: 14px 16px 14px 44px;
  color: var(--c-text);
  font-size: .95rem;
  line-height: 1.6;
  background: rgba(14, 34, 53, .72);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-hot);
}

.page-about .about-venue-list li::before {
  content: "›";
  position: absolute;
  left: 14px;
  top: 50%;
  color: var(--c-hot);
  font-family: var(--font-mono);
  font-size: 1.4rem;
  line-height: 1;
  transform: translateY(-50%);
}

.page-about .about-venue-list .mono {
  margin-right: 8px;
  color: var(--c-accent);
  font-size: .85rem;
}

.page-about .about-cases-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-cases-copy p {
  margin: 0 0 16px;
  color: var(--c-text);
  line-height: 1.85;
}

.page-about .about-cases-copy .btn {
  margin-top: 8px;
}

.page-about .about-case-board {
  background: rgba(14, 34, 53, .72);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-accent);
  box-shadow: var(--shadow);
}

.page-about .about-case-list {
  display: grid;
  gap: 16px;
  margin: 0;
}

.page-about .about-case-list dt {
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-about .about-case-list dd {
  margin: 4px 0 0;
  color: var(--c-dim);
  line-height: 1.7;
}

.page-about .about-team-intro {
  max-width: 60rem;
  margin: 0 0 24px;
  padding-left: 16px;
  color: var(--c-text);
  line-height: 1.85;
  border-left: 3px solid var(--c-accent);
}

.page-about .about-team-grid {
  display: grid;
  gap: 20px;
}

.page-about .about-team-card {
  position: relative;
  background-color: var(--c-panel);
  background-image: linear-gradient(160deg, rgba(14, 34, 53, .9), rgba(11, 27, 43, .92));
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-accent);
  box-shadow: var(--shadow);
}

.page-about .about-team-card:nth-child(2) {
  border-left-color: var(--c-hot);
}

.page-about .about-team-card h3 {
  margin: 0;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.page-about .about-team-num {
  margin: 14px 0;
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .about-team-card:nth-child(2) .about-team-num {
  color: var(--c-hot);
}

.page-about .about-team-card p:last-child {
  margin: 0;
  color: var(--c-dim);
  line-height: 1.75;
}

.page-about .about-team-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--c-bg-deep);
  border: 1px solid var(--c-line);
}

.page-about .about-team-bottom p {
  max-width: 46rem;
  margin: 0;
  color: var(--c-text);
  line-height: 1.7;
}

.page-about .about-bottom-visual {
  margin: 72px 0 0;
  border-top: 1px solid var(--c-line);
}

.page-about .about-bottom-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-cta {
  position: relative;
  padding: 72px 0;
  overflow: hidden;
  background-color: var(--c-bg-deep);
  background-image:
    linear-gradient(120deg, rgba(57, 255, 20, .1), transparent 40%),
    linear-gradient(300deg, rgba(255, 106, 0, .08), transparent 50%);
  border-top: 1px solid var(--c-line);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, transparent 0 14px, rgba(255, 255, 255, .015) 14px 15px);
  pointer-events: none;
}

.page-about .about-cta .container {
  position: relative;
  z-index: 1;
}

.page-about .about-cta-index {
  margin: 0 0 12px;
  color: var(--c-hot);
  font-family: var(--font-mono);
  letter-spacing: .08em;
}

.page-about .about-cta h2 {
  max-width: 56rem;
  margin: 0 0 16px;
  color: var(--c-text);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.15;
}

.page-about .about-cta p {
  max-width: 36rem;
  margin: 0 0 28px;
  color: var(--c-dim);
  line-height: 1.85;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 88px;
  }

  .page-about .about-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: 64px;
    align-items: center;
  }

  .page-about .about-hero-stats {
    margin-top: 0;
    gap: 16px;
  }

  .page-about .about-section {
    padding: 92px 0 84px;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 1.1fr .9fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .about-timeline {
    margin-top: 0;
  }

  .page-about .about-timeline::before {
    left: 50%;
  }

  .page-about .about-timeline-item {
    grid-template-columns: 1fr 48px 1fr;
    column-gap: 32px;
    padding-bottom: 44px;
  }

  .page-about .about-timeline-marker {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    margin-top: 28px;
  }

  .page-about .about-timeline-card {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .about-timeline-item:nth-child(even) .about-timeline-card {
    grid-column: 1;
  }

  .page-about .about-venues-grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
  }

  .page-about .about-cases-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-team-bottom {
    padding: 24px 32px;
  }

  .page-about .about-cta {
    padding: 100px 0;
  }
}